2 years ago

Which is the luminous object?

Physics

1 answer:

Sedbober [7]2 years ago

5 0

The sun, fire and lamp because they generate their own light.

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What is the force on a person’s hand, which is using a rope to accelerate a 5 kg block upward with an acceleration of 2.2 m/s 2

slavikrds [6]

Answer:

F = 11 N

Explanation:

Given,

Mass of a block, m = 5 kg

Acceleration of the block, a = 2.2 m/s²

We need to find the force on the person's hand. Let it is F. We know that force is given by the product of mass and acceleration as follows :

F = ma

F = 5 kg × 2.2 m/s²

F = 11 N

So, the force on a person's hand is 11 N.

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2 years ago

A 4 kg bowling bowl is sitting on a table 1 meter off the ground. How much potential energy does it have?

il63 [147K]

Answer:

$\huge\boxed{\sf P.E. = 39.2\ Joules}$

Explanation:

<u>Given Data:</u>

Mass = m = 4 kg

Acceleration due to gravity = g = 9.8 m/s²

Height = h = 1 m

<u>Required:</u>

Potential Energy = P.E. = ?

<u>Formula:</u>

P.E. = mgh

<u>Solution:</u>

P.E. = (4)(9.8)(1)

P.E. = 39.2 Joules

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

3. During a tug-of-war, Team A pulls with a

Neko [114]

Answer:

8000 - 5000 =3000

Explanation:

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Two hockey pucks are sliding along the ice, towards the same goal, one directly in front of the other. The hockey puck in front

grandymaker [24]

Answer: A.9.2m/s

Explanation:

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the waves created by two speed boats in the lake interact to form larger waves this is an example of

Kobotan [32]

Answer:

A. constructive interference.

Explanation:

brainliest please? :))

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